Amplifying-horn for talking-machines.



12" @www 9 R A. BoswBLL. AMPLIFYING HRN EGB TLKENG MAGENES.

' APPLIUATXOH FILED MA! l; i910.

999,954; Pat-@med Aug. 8, 1911 UNrrED n sfrafras PATENT OFFICE.

ROBERT A. BSWELL, OI TASHENGTON, DISTRICT CIF COLUMBIA.

AMPLIFYING-HDRN" FR TALKING-MACHINES.

Specification of Letters Patent. PatentedlAug. 8, 1911.

@pacman :nea May ii, -910. serial No. 560,562.. i 4

To al whom it may concern:

Be it known that Renner A. Boswnim, a citizen of the United States of America, re siding at lVashington, District or" Columbia,

5 has invented a new, and useful AmplifyingM Horn for Talking-Machines, of which the following is a specification.

The invention about to be set forth and claimed belongs'to the art of acoustics, and

it particularly pertains to a 'new and useful the/"sound Waves, or annularA indentures of /the record.

A further feature of the invention is. to so connect and support the arm and he horn .of this particular form as to allow the arm to be'read'ily lifted from the record, .in order to dispose it slightly to one. side thereof, or to raise the horn vertically. When the' horn is raised, the same is easily and readily supported within a portion ot the compound curved tubular member by friction. it is also understood that the arm may be supported in the member by friction. 'The horn, as shown in Figure 2, may be so arranged as to swing laterally, well as vortically, but, as shown in Figure 1, tbe ialeral movement of the horn is dispensed with.

In the exposition of this specilcition, a particular design of machine is adhered to but the invention is not to be conlined to this special design. Ils reduction to practice may require certain changes and alterations which the right is claimed to make, provided such changes and alterations are comprehended by the appended claims.

The sound conveying tube proper only consists of three parts, and so supported, as above stated, as to perform all the nerwssary f notions required upon a talking machine.

Further features and the arrangement of parts will be hereinafter set forth and pointed out in the claims.

Referring to the drawings,

Figure 1 is 'a side elevation of a talking tmachine, showingfan -ampiiying horn applied thereto, and provided with the compound curved tubular member, for the support ot'the free moving parts of the horn.

Figure 2 y through ,the compound curved tubular membei', which is shown in Figure 1, with the exception that the members 29 and 30 are eliminated. y

Figure 3 is a sectional View on line 33 of Flgure 2, disclosing the connection between the compound curved membery and its support.

. Figure 4 is a detail sectional view, showing a portion of the compound curved tubular member, connected to its support by means of screws.

Figure 5 is a detail sectional view of a modified form of the mounting of either the compoundl curved member 6 or the curved member 21. f

As to the drawings, l denotes the casing of a talking machine, containing the usual mechanism (not shown) for rotatingthe table carrying the records.

2 'represents a bracket secured to one side of the casing for supporting the amplifying horn 3.

The amplifying horn comprises the horn proper 4 and the reproducer arm 5,' which v is a vertical sectional view whichis dove-tailed or received within the recess 10 of the bracket 2. lThis recess 10 conforms to the shape of the T-shaped projection, and is designed to fit neatly and snugly therein, there not being sufficient friction to prevent the ready removal of the said T-shaped projection.

ln Figure 4, the compound curved tubular men'iber, at its lower portion, is slightly enlarged, as shown at 12, which is provided with threaded recesses 13. The bracket 2, in Figure 4, is penetrated by a pair df screws 14, which are threaded into the recesses 13, in order that the tubular member neck 15, which is vtelescopicallyf s, curves membe'i l www@ cui i @i i'. cumifeenfce, may

duree, 0V

Imanici ifm, fixe 1.0m 4- proper umg al :ngggemnt my me repmdu v 99 3. A compound curved member; and a reproducer arm and horn correspondingly curved and received thereby to have longitudinal movements therein; said arm and yhorn being supportable in various posit-ions.

4. A compound curved member; a horn and a. reproducer 'arm correspondingly curved, said membersbeing telescopically united to have vertical movements.

5. A compound curved tubular member; a reproducedarm having a neck portion threaded thereto; said neck portion being received within the lower curve of the compound curved member, and a horn having a curved neck received within the upper curve of the compound curved member to move longitudinally therein.

6. A compound curved member; a reproducer arm having a neck portion detachably threaded thereto; said neck portion being received within the lower curve of the compound curved member; and a horn having a curved neck received within the upper curve of the compound curved member to have a longitudinal free movement therein; .said arm and horn being supportable in various positions.

7. A curved tubular member; and a reproducer arm having a curved neck detachably threaded thereto and correspondingly curved with regard lto the curved tubular member, received and supported within the curved tubular member to have longitudinal vertical telescopical movements therein;

8. A curved tubular member; and a. reproducer arm having a curved neck detachably threaded thereto and corresponding'ly curved with regard to the curved tubular member; received and supported within the curved tubular member to have longitudinal vorticaltelescopi .al movements therein said arm being supportable in various positions.

t). In a talking machine; a compound curved member; a horn support. having a detachable connection therewith; and a reproducer arm and horn having curved necks ll. A quarterly curved member; a horn having a swiveled member; said members being telescopically united whereby the horn may be raised or lowered.

l2. An amplifier; comprising a compound curved tubular member; and telescopically mo fable free portions correspondingly curved and supported from either end of the member.

13. An amplifier; comprising a compound curved tubular member; telescopically movable free portions correspondinglycurved and Supported from either end of the member; and means permitting one of the free portions to move concentrically with regard to the member.

14. An amplifier; comprising a compound curved tubular member; telescopically movable free portions correspondingly curved and supported from either end of the mem-- ber; said free portions being supportable in various raised or lowered positions.

l5. An amplifier; comprising a compound curved tubular member; telescopically movable f'ree portions correspondingly curved and supported from either end of the member; means permitting one of the free poi'- tions to move concentrically with regard to the member; said free portions being supportable in various raised or lowered positions.

In witness whereof, the applicants signature7 is hereunto aflixed in the presence of two witnesses.

ROBERT A. BOSWELL. `Witnesses W'. M. HOFFMAN, JAS. M. Frrzrivrmok, Jr. 

